My Inquiry
My Account
Texas Instruments LM4050QAEM3X8.2/NOPB
- Part No.:
- LM4050QAEM3X8.2/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QAEM3X8.2/NOPB.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,783
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QAEM3X8.2/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering 8.192 V nominal reverse breakdown voltage with ±0.1% (A-grade) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 150 μVrms wideband noise (10 Hz–10 kHz). It operates from 74 μA to 15 mA cathode current across −40°C to 125°C, enabling use in high-resolution ADC/DAC biasing and automotive sensor signal conditioning.
For engineers reviewing the LM4050QAEM3X8.2/NOPB datasheet, LM4050QAEM3X8.2/NOPB pinout, LM4050QAEM3X8.2/NOPB application, or LM4050QAEM3X8.2/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, no-output-capacitor stability, fixed 8.192 V output for 12-bit systems requiring 2 mV/LSB, and thermal hysteresis of 2.3 mV after −40°C/125°C cycling.
Technical Context
The LM4050QAEM3X8.2/NOPB implements a curvature-corrected bandgap shunt architecture with Zener-zap trim at wafer sort, achieving ±0.1% accuracy without external feedback. Its internal compensation eliminates need for output capacitance while maintaining stability with any capacitive load.
It functions as a two-terminal device: cathode regulates voltage relative to anode (ground), with minimum cathode current of 74 μA (typical) at 25°C and 100 μA over full −40°C to 125°C range. Dynamic impedance is 0.6 Ω at 1 mA/120 Hz, supporting low-noise, high-PSRR analog front-ends in battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.192 V nominal reverse breakdown voltage - enables exact 2 mV/LSB scaling for 12-bit ADCs operating from ≥10 V supplies. |
| Initial Tolerance | ±0.1% at 25°C (A grade) - ensures ≤±8.2 mV absolute error before temperature or aging effects. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to 125°C - contributes ≤±410 ppm (±3.36 mV) drift across full range. |
| Noise (10 Hz–10 kHz) | 150 μVrms at 150 μA - limits added noise to <0.02% of full-scale in precision 8.192 V reference applications. |
| Operating Current | 74 μA to 15 mA cathode current - supports ultra-low-power sensor nodes and high-current precision DAC buffers. |
| Thermal Hysteresis | 2.3 mV after −40°C/125°C cycling - defines repeatability error when ambient temperature varies widely in automotive ECUs. |
| AEC-Q100 Grade | Grade 1 qualified (−40°C to 125°C) - certified for engine bay and transmission control module deployment. |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount configuration with exposed die attach pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / regulated voltage node | Connects to series resistor (RS) from supply; voltage referenced to Anode; carries total cathode current (IQ + IL). |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; serves as voltage reference point for all measurements and load connections. |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 (Anode); avoids parasitic Schottky conduction in EMI-prone environments. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 8.192 V output | Eliminates external resistor divider; directly supports 12-bit converters requiring 2 mV/LSB resolution with ≥10 V supplies. |
| No output capacitor required | Internally compensated design ensures stability with zero or arbitrary capacitive loads - reduces BOM count and PCB area. |
| AEC-Q100 Grade 1 | Qualified for automotive applications up to 125°C junction temperature - meets reliability and qualification requirements for powertrain and ADAS modules. |
| Low micropower operation | 74 μA minimum cathode current enables >10-year battery life in wireless sensor transmitters using coin cells or energy harvesting. |
| Low dynamic impedance | 0.6 Ω at 1 mA/120 Hz - minimizes load-induced voltage droop and improves PSRR in noisy industrial power rails. |
Applications
| Battery-Powered Precision Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Portable multimeter or handheld data logger powered by two AA cells, requiring stable 8.192 V reference for 12-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise, low-drift excitation for ratiometric sensor bridges and ADC reference input. Use Value: Enables 0.02% measurement accuracy over −20°C to 60°C ambient with <10 μA quiescent current contribution to system budget. |
Use Scenario: Engine coolant temperature sensor interface in powertrain control unit, operating continuously at 125°C under hood. IC Role / Device Role / Timing Role: Precision bias source for RTD or thermistor signal chain, referenced to microcontroller's 12-bit ADC. Use Value: Maintains ≤±0.1% output stability over full automotive temperature range and 15-year lifetime, meeting ASIL-B functional safety constraints. |
| Industrial Process Control Transmitter | Energy Metering Reference Subsystem |
|
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation, housed in explosion-proof enclosure. IC Role / Device Role / Timing Role: Stable 8.192 V shunt reference for DAC-based current loop driver and analog front-end calibration. Use Value: Delivers <2.3 mV thermal hysteresis and 120 ppm long-term stability, ensuring field calibration validity for 5+ years without recalibration. |
Use Scenario: Polyphase electricity meter with metrology SoC requiring traceable 8.192 V reference for anti-tampering ADC sampling. IC Role / Device Role / Timing Role: Primary voltage reference for isolation amplifier feedback path and metrology ADC reference rail. Use Value: Supports Class 0.2 accuracy certification via <50 ppm/°C tempco and 150 μVrms noise floor, minimizing quantization uncertainty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5082IDBZR | 8.2 V series reference (not shunt); requires external bypass cap; 3 μVpp noise; 3 ppm/°C tempco | Higher accuracy but needs 2.7–18 V supply; unsuitable for floating or high-side sensing topologies | Select for ultra-low-noise, low-tempco designs where supply headroom and board space allow series topology. |
| ADR4580BRZ | 8.0 V series reference; 1.5 μVpp noise; 3 ppm/°C tempco; 10 mA max load | Requires dedicated supply rail; cannot sink current like shunt devices; higher cost and larger SOIC-8 footprint | Prefer when system already has clean 12 V rail and demands sub-ppm stability over temperature and time. |
Compared with REF5082IDBZR and ADR4580BRZ, LM4050QAEM3X8.2/NOPB offers two-terminal simplicity, no supply dependency, and AEC-Q100 qualification - making it optimal for cost-sensitive, space-constrained, or floating-reference automotive and industrial shunt regulator designs.
Availability
LM4050QAEM3X8.2/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, industrial process transmitters, and energy metering systems requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4050QAEM3X8.2/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog ICs and automotive-qualified components.
The LM4050-N family was designed specifically for space-constrained, high-accuracy shunt reference applications in automotive, industrial, and portable instrumentation - prioritizing micropower operation, no-capacitor stability, and AEC-Q100 compliance.
FAQ
What is the minimum cathode current required for regulation in LM4050QAEM3X8.2/NOPB?
The LM4050QAEM3X8.2/NOPB requires a minimum cathode current of 74 μA (typical) at 25°C and 100 μA across its full −40°C to 125°C operating range to maintain regulation within specifications. This value is higher than lower-voltage variants due to its 8.192 V breakdown, and must be supplied through the external series resistor (RS) even under worst-case supply and load conditions.
Is LM4050QAEM3X8.2/NOPB qualified for automotive applications?
Yes, LM4050QAEM3X8.2/NOPB is LM4050-N-Q1 variant and is AEC-Q100 Grade 1 qualified, rated for operation from −40°C to 125°C ambient temperature. It is manufactured on an automotive-grade flow and meets stress testing requirements for engine control, transmission, and ADAS modules.
Does LM4050QAEM3X8.2/NOPB require an output capacitor for stability?
No, LM4050QAEM3X8.2/NOPB is internally compensated and does not require an output capacitor for stability. It remains stable with zero, small, or large capacitive loads - a key advantage over many competing shunt references that mandate specific capacitor values or ESR ranges.
What is the thermal hysteresis specification for LM4050QAEM3X8.2/NOPB?
The LM4050QAEM3X8.2/NOPB exhibits 2.3 mV thermal hysteresis - defined as the voltage shift measured at 25°C after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced drift in the SOT-23 package and is critical for applications requiring repeatable calibration after wide-temperature exposure.
How does the 8.192 V output of LM4050QAEM3X8.2/NOPB benefit ADC/DAC systems?
The 8.192 V output of LM4050QAEM3X8.2/NOPB provides exactly 2 mV per LSB for 12-bit converters operating from ≥10 V supplies - eliminating scaling errors and simplifying firmware calibration. This matches standard binary-weighted full-scale definitions (212 = 4096 steps × 2 mV = 8.192 V), improving end-system measurement fidelity.
LM4050QAEM3X8.2/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 8.192V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 100 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QAEM3X8.2/NOPB FAQ
1.How can I place an order for LM4050QAEM3X8.2/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QAEM3X8.2/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4050QAEM3X8.2/NOPB reliable?
The price and inventory of LM4050QAEM3X8.2/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QAEM3X8.2/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QAEM3X8.2/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QAEM3X8.2/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QAEM3X8.2/NOPB?
LM4050QAEM3X8.2/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QAEM3X8.2/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4050QAEM3X8.2/NOPB?
For technical support, including LM4050QAEM3X8.2/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QAEM3X8.2/NOPB requirements.
6.How does Aetrix verify that LM4050QAEM3X8.2/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QAEM3X8.2/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4050QAEM3X8.2/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QAEM3X8.2/NOPB?
All LM4050QAEM3X8.2/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QAEM3X8.2/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4050QAEM3X8.2/NOPB part is unused and in its original packaging.
Return procedure for LM4050QAEM3X8.2/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QAEM3X8.2/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
